82 lines
2.5 KiB
C++
82 lines
2.5 KiB
C++
/*
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Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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/*
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* Functions exported from this package.
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*/
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#ifndef BINARY_LOG_FUNCS_INCLUDED
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#define BINARY_LOG_FUNCS_INCLUDED
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#include "binary_log_types.h"
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// We use cstdint if this is 2011 standard (or later)
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#if __cplusplus > 201100L
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#include <cstdint>
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#else
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#include <stdint.h>
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#endif
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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unsigned int my_time_binary_length(unsigned int dec);
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unsigned int my_datetime_binary_length(unsigned int dec);
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unsigned int my_timestamp_binary_length(unsigned int dec);
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/**
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This helper function calculates the size in bytes of a particular field in a
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row type event as defined by the field_ptr and metadata_ptr arguments.
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@param column_type Field type code
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@param field_ptr The field data
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@param metadata_ptr The field metadata
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@note We need the actual field data because the string field size is not
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part of the meta data. :(
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@return The size in bytes of a particular field
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*/
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uint32_t calc_field_size(unsigned char column_type, const unsigned char *field_ptr,
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unsigned int metadata);
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/**
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Compute the maximum display length of a field.
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@param sql_type Type of the field
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@param metadata The metadata from the master for the field.
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@return Maximum length of the field in bytes.
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*/
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unsigned int max_display_length_for_field(enum_field_types sql_type,
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unsigned int metadata);
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/**
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Returns the size of array to hold a binary representation of a decimal
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@param precision number of significant digits in a particular radix R
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where R is either 2 or 10.
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@param scale to what position to round.
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@return size in bytes
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*/
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int decimal_binary_size(int precision, int scale);
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#ifdef __cplusplus
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}
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#endif // __cplusplus
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#endif /* BINARY_LOG_FUNCS_INCLUDED */
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